1 files changed, 15 insertions, 7 deletions
diff --git a/src/libaudqt/prefs-widget.h b/src/libaudqt/prefs-widget.h
index f4deb4f..773945a 100644
--- a/src/libaudqt/prefs-widget.h
+++ b/src/libaudqt/prefs-widget.h
@@ -68,6 +68,19 @@ private:
     SmartPtr<HookReceiver<HookableWidget>> hook;
 };
 
+/* shared class which allows disabling child widgets */
+class ParentWidget : public HookableWidget {
+public:
+    void set_child_layout (QLayout * layout)
+        { m_child_layout = layout; }
+
+protected:
+    ParentWidget (const PreferencesWidget * parent, const char * domain) :
+        HookableWidget (parent, domain) {}
+
+    QLayout * m_child_layout = nullptr;
+};
+
 /* button widget */
 class ButtonWidget : public QPushButton {
 public:
@@ -75,16 +88,11 @@ public:
 };
 
 /* boolean widget (checkbox) */
-class BooleanWidget : public QCheckBox, public HookableWidget {
+class BooleanWidget : public QCheckBox, public ParentWidget {
 public:
     BooleanWidget (const PreferencesWidget * parent, const char * domain);
-
-    void set_child_layout (QLayout * layout)
-        { m_child_layout = layout; }
-
 private:
     void update ();
-    QLayout * m_child_layout = nullptr;
 };
 
 /* integer widget (spinner) */
@@ -97,7 +105,7 @@ private:
 };
 
 /* integer widget (radio button) */
-class RadioButtonWidget : public QRadioButton, HookableWidget {
+class RadioButtonWidget : public QRadioButton, public ParentWidget {
 public:
     RadioButtonWidget (const PreferencesWidget * parent, const char * domain,
      QButtonGroup * btn_group);